**Reconstructing phylogenetic tree from multipartite quartet system**

Hiroshi Hirai and Yuni Iwamasa*Proceedings of the 29th International Symposium on Algorithms and Computation (ISAAC'18)*, to appear.**Discrete convexity in joint winner property**

Yuni Iwamasa, Kazuo Murota, and Stanislav Živný*Discrete Optimization*, 28:78–88, 2018.**Beyond JWP: A tractable class of binary VCSPs via M-convex intersection**

Hiroshi Hirai, Yuni Iwamasa, Kazuo Murota, and Stanislav Živný*Proceedings of the 35th International Symposium on Theoretical Aspects of Computer Science (STACS'18)*, LIPIcs 96, pp.39:1–39:14, 2018.**The quadratic M-convexity testing problem**

Yuni Iwamasa*Discrete Applied Mathematics*, 238:106–114, 2018.*Proceedings of the 10th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications (JH'17)*, pp.247–256, 2017.**On a general framework for network representability in discrete optimization**

Yuni Iwamasa*Journal of Combinatorial Optimization*, 36(3):678–708, 2018.*Proceedings of the 4th International Symposium on Combinatorial Optimization (ISCO'16)*, LNCS 9849, pp.369–380, 2016.**On $k$-submodular relaxation**

Hiroshi Hirai and Yuni Iwamasa*SIAM Journal on Discrete Mathematics*, 30(3):1726–1736, 2016.*Proceedings of the 9th Hungarian-Japanese Symposium on Discrete Mathematics and Its Applications (HJ'15)*, pp.331–335, 2015.**Threshold influence model for allocating advertising budgets**

Atsushi Miyauchi, Yuni Iwamasa, Takuro Fukunaga, and Naonori Kakimura*Proceedings of the 32nd International Conference on Machine Learning (ICML'15)*, pp.1395–1404, 2015.**Networks maximizing the consensus time of voter models**

Yuni Iwamasa and Naoki Masuda*Physical Review E*, 90, 012816, 2014.[Journal]

**A tractable class of binary VCSPs via M-convex intersection**

Hiroshi Hirai, Yuni Iwamasa, Kazuo Murota, and Stanislav Živný

[arXiv]// the full version of STACS'18 paper [6]

- Hiroshi Hirai and Yuni Iwamasa

**Reconstructing phylogenetic tree from multipartite quartet system**

The 29th International Symposium on Algorithms and Computation (ISAAC'18), Yilan, Taiwan, December 2018. - Hiroshi Hirai, Yuni Iwamasa, Kazuo Murota, and Stanislav Živný

**Discrete convexity in binary VCSPs**

The 23rd International Symposium on Mathematical Programming (ISMP'18), Bordeaux, France, July 2018. - Hiroshi Hirai, Yuni Iwamasa, Kazuo Murota, and Stanislav Živný

**Beyond JWP: A tractable class of binary VCSPs via M-convex intersection**

The 35th International Symposium on Theoretical Aspects of Computer Science (STACS'18), Caen, France, February–March 2018. - Yuni Iwamasa, Kazuo Murota, and Stanislav Živný

**Discrete convexity in joint winner property**

The 19th Conference on Integer Programming and Combinatorial Optimization (IPCO'17), Waterloo, Canada, June 2017.

// poster session - Yuni Iwamasa

**The quadratic M-convexity testing problem**

The 10th Japanese-Hungarian Symposium on Discrete Mathematics and Its Applications (JH'17), Budapest, Hungary, May 2017. - Yuni Iwamasa

**On a general framework for network representability in discrete optimization**

The 4th International Symposium on Combinatorial Optimization (ISCO'16), Salerno, Italy, May 2016. - Hiroshi Hirai and Yuni Iwamasa

**On $k$-submodular relaxation**

The 9th Hungarian-Japanese Symposium on Discrete Mathematics and Its Applications (HJ'15), Fukuoka, Japan, June 2015.